Chain oil does not flow to chainsaw chain

Chainsaw chain lubrication system

To supply oil for chainsaw chain lubrication a special pump is used in the tool, which doses lubricant to the saw bar depending on the number of engine revolutions.

The system uses oil for chainsaw chain lubrication, which has increased adhesive properties, it is necessary for the even distribution of oil around the bar and retention on it even at high revolutions of the chain. Let’s take a closer look at the oil supply system of modern chainsaws.

How to Adjust the Bar and Chain Oil Flow on Your Echo Chainsaw

The structure of the lubrication system

Depending on the chainsaw brand, the lubrication system components may vary slightly in design, but their total number and connection scheme remains the same.

The main components of the lubrication system are:

  • oil tank, usually located in the engine crankcase.
  • Filter element, installed in the tank.
  • Oil line, it is a small diameter hose made of oil-resistant rubber.
  • The heart of the system. the oil pump.
  • The worm gear that transmits power from the motor to the pump.
  • The chainsaw bar, it too can be considered an element of the lubrication system, as it has special holes for feeding oil, by the way and the chain itself takes part in oil transportation and accordingly also has some elements designed just to provide lubrication.

OldGuyDIY New Husqvarna 455 Rancher Chainsaw No Oil Flow To Bar & Chain Fixed, Oil Pump Inlet Line

How the oil pump works

Before removing the chainsaw pump, it is important to understand the principle by which it functions. The force generated at the actuator is transferred to the plunger through a worm-type gear (the force transmits a rotary-type motion). The latter starts to rotate, repeating the reciprocating motion.

This type of movement is guaranteed by the specific shape of the ram, the adjusting screw, its stop-type spring and the eccentric. When the plunger starts to move backwards, the oil flows into the reservoir through a small hole (we see this principle in an ordinary syringe as well).

The forward movement forces the oil out through the same hole. It is not difficult to guess that according to this principle, the unit only works due to the tightness created by the rubber cuff. The work diagram may not show.

In addition, by this principle, the pump works only if the two openings are not opened at the same moment. To prevent this from happening, developers have provided a segmented notch at the tip of one ram. During the backward movement, it turns toward the inlet port. This hole closes when forward movement occurs. At the same time the outlet hole is open, because the cutout is turned toward the last hole. One turn of the plunger occurs with one reciprocating movement.

The saw’s main assembly manufacturers can change the plunger’s stroke, which requires an eccentric and an adjusting screw. The first is visually just a cylinder integrated into the adjusting screw body. The main axis of this part will not coincide with the axis of the adjusting screw even when the screw is rotating.

The cylinder will approach and recede in relation to the plunger ribs. This is important to know in order to understand the work and function of the eccentric. This type of displacement of this part is the reason why it became known as the “cam”.

If the plunger comes as close to the cam as possible, oil cannot be pumped. Otherwise, the plunger will run the oil to maximum (pump at full power).

Also be sure to take a look at this article on how chainsaw chain lubrication works. Information is also related to the oil and how it flows to the working parts.

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How the Plunger Moves?

Its movement is made possible by a special machining of the face that rests in the center of the eccentric. This edge resembles a normal ring and is surrounded by a projection in the center. This ring is at an angle, not perpendicular to the plunger axis. By forming a bevel, this part allows the plunger to protrude slightly.

Plunger end and adjusting screw are connected in a specific way. This allows the face to touch the screw when it is in motion with different parts, protruding and not protruding. When the face of the screw touches the protruding part, the plunger rotates forward. And when the end touches the adjustment screw is not protruding part, there is a backward movement. Backward movement is possible due to the stop spring.

Identifying the oil pump problem

If the operator knows how the booster pump is arranged, he will be able to figure out how to remove the chainsaw pump. A minimum of locksmith skills and a minimum of tools is enough to do this and then repair the assembly.

Keep in mind that identifying the problem of the oil feed pump will allow you to understand what kind of disassembly of the component you need to do, complete or partial. If you are afraid of not being able to cope with a complete disassembly, go to a service shop, where specialists use the technical potential for this. Of course, many of the parts you might damage when you disassemble the accessory can be replaced, but it will cost you a pretty penny.

Keep in mind that when the oil reservoir is full but no oil flows to the saw headset, the cause of this malfunction may not always be related to the oil pump. Sometimes in the process of disassembling the saw, you can find the failure of other elements not related to this node. often than not, replacing them solves the main problem.

Also, before you blame all the trouble on the oil pump, check the oil filter, which, if very dirty, not only impairs the performance of the oil pump, but can also completely put it out of operation. To check the oil filter, simply hold a piece of paper over it and leave a streak of oil on the paper. The density of the latter will allow you to assess the condition of the filter and develop a plan of further actions.

Important! Sometimes after the repair of the lubrication system consumable does not come to the saw headset, then you need to look for the cause of the failure of the mechanism in the regular adjustments. Also this problem may arise because of the mismatch between the viscosity and density indicator. On the other hand, the appearance of this problem through carelessness or inattention can provoke the operator by installing an unsuitable guide on the power unit, for example, an ordinary household guide from a professional powerful tool.

Technical data

The Husqvarna 142 has a tight layout with easy access to controls and filler ports. The 4.6 kg tool is well balanced, so it sits comfortably in the hand.

Chainsaw not oiling, check this first. Easy fix.

Ergonomically formed handles for stable hold in tight spaces. Built-in anti-vibration and low-noise design helps keep you productive and productive on high-volume jobs.

STIHL chain saw does not transfer oil to the chain

Every chainsaw, regardless of model, brand or class, has approximately the same structure. Several important components are integrated into the machine, including the lubrication system. Without the latter, the power unit would not work. Through the functioning of the forced lubrication system, the tool chain reduces the risk of severe wear, which is guaranteed by the constant friction of the cutting element against the guide bar, the inevitable heat. Lubricating the chain lubrication softens the friction, the chainsaw operator needs to repair the element or replace it completely less often.

The main reasons why the STIHL 180 does not deliver oil.

A quick look at why the oil in your chainsaw has stopped flowing to the tire from the tank Support our channel in any way you can.

Chainsaw fuel system: 1. fuel filter, 2. carburetor, 3. manual booster pump.

If you set the carburettor right, it will use only as much fuel as is necessary. Otherwise it runs out too fast.

It is normal for the fuel to run out slowly when the saw is in use. If it is missing, the chain is not lubricated properly, so the chainsaw must be operated in a well-coordinated manner. It is necessary not only to be able to repair the damage, but also to find it yourself.

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You can change the fuel supply manually. Proper operation of the lubrication system is determined by raising the tire. If there is oil spray, it means that it is adjusted correctly.

It is advisable to saw with plenty of lubricant. If you work with soft wood, use only small amounts of fuel.

The chain should always be well lubricated. This avoids smoke and further damage to the chain saw. If oil leaks or does not flow at all, the cause of the problem must be located. It is not advisable to operate the tool before repairing.

chain, does, flow, chainsaw

When selecting fuel, you need to do it right. The desire to save money causes the chain to fail quickly. In order to avoid unpleasant consequences it is undesirable to choose oil produced in China. Original manufacturers are to be given preference. They are much more expensive, but also of higher quality.

Change air filter every 2 months, fuel filter every six months

Chainsaws have 2 filters. an air filter and a fuel filter. Domestic models are equipped with a felt air filter. You don’t clean it, you replace it because blowing it out doesn’t completely clear the dust. The frequency of replacement is as follows: if you work with a chainsaw 2-3 times a week, change the filter once every 2 months.

The longevity of a fuel filter depends on the quality of the fuel mixture. And the quality of the fuel mixture depends on what you store it in. The most common mistake is storing gasoline or mixture in a regular plastic bottle. You shouldn’t do that, and here’s why: gasoline corrodes common plastic, fine particles get into the mixture, settle in a thin film on the filter during operation. The result will be the same story with which this article began.

When to change the fuel filter? If your chainsaw occasionally shuts down and does not hold speed, the filter is probably clogged. Take it out, blow with a compressor from the inside out (not the other way around). If it’s hard to get air through, it means the filter is clogged with a film from the fuel mixture that was stored in an unusable plastic container. Such a filter should be changed. If you use a mix that is properly stored, change the filter once every six months if you work with a chainsaw 2-3 times a week.

Never run the saw without filters, or debris will get into the engine.

Before putting the chainsaw away, drain all the fuel from the tank and let the rest run out: start the saw and wait until it shuts down.

What to check before working with a chainsaw

Check that the nuts are tightened before each use of the chainsaw. The fact that such a tool as a chainsaw has a great vibration, and because of this the screws and nuts in it can loosen. That is why it is very unsafe to operate a chainsaw, in which parts are poorly fixed.

Checking chainsaw plugs for fouling (it should not be there) should also be done, and in the case of fouling, replace the plug with a new one.

How an oil pump works

Before removing the chainsaw pump, it is important to understand the principle by which it functions. The force generated at the actuator passes to the plunger through a worm-type gear (the force transmits a rotary-type motion). The latter begins to rotate, repeating the reciprocating type motion.

This type of movement is guaranteed because of the specific shape of the plunger, the adjusting screw, its thrust type spring and the eccentric. When the plunger starts to move backwards, the oil flows into the reservoir through a small hole (we see this principle in the normal syringe as well).

Forward movement forces the oil out through the same hole. It is easy to guess that according to this principle the unit works only due to the tightness created by the rubber cuff. It may not be indicated on the work diagram.

over, this principle only works when the two ports are not opened at the same time. To prevent this from happening, the developers saw provided a segmented notch at the tip of one plunger. During the backward movement, it is rotated toward the inlet port. This hole closes when forward movement occurs. At the same time, the outlet hole is open, because the cutout is turned to the last hole. One turn of the plunger occurs with one reciprocating movement.

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In this case, the manufacturers of the saw basic units can change the stroke of the plunger, which requires an eccentric and an adjusting screw. The first one is visually just a cylinder integrated into the body of the adjustment screw. The main axis of this part will not coincide with the axis of the adjustment screw even when the screw is rotating.

The cylinder will move in and out of alignment with the ram ribs. This is important to know in order to understand the operation and function of the eccentric. This type of displacement of this part is the reason why it became known as a “cam.

If the plunger gets as close to the cam as possible, oil cannot be pumped. Otherwise, the plunger will go to maximum oil flow (pump at full power).

chain, does, flow, chainsaw

Also be sure to take a look at this article on how chainsaw chain lubrication works. The information is also related to the oil and its supply to the working bodies.

How the plunger moves?

Its movement is made possible by a special face machining which centers the protrusion on the eccentric. The edge of this end resembles a normal ring and is surrounded by a projection in the center. This ring is inclined instead of perpendicular to the plunger axis. By forming a bevel, this part allows the plunger to protrude slightly.

Plunger edge and adjusting screw are connected in a peculiar way. It allows the face to touch the screw during reciprocating movement with different protruding and non-protruding parts. When the face of the screw touches the protruding part, the plunger rotates forward. And, when the end touches the adjustment screw with the part that is not protruding, there is a backward movement. Backward movement is possible due to the thrust spring.

Identification of an oil pump problem

If the operator knows how the booster pump is designed, he will be able to figure out how to remove the chainsaw pump. Enough a minimum of locksmith skills and minimum tools to make it, and then conduct repairs node.

Keep in mind that identifying the problem of the oil pump will allow you to understand what kind of disassembly of the component you need to do, complete or partial. If you are afraid of not being able to do a complete disassembly, go to a service shop, where experts use technical capabilities to do this. Of course, many of the parts you could damage when removing the component can be replaced, but it will cost you a lot of money.

Keep in mind that when the oil reservoir is full, but oil is not supplied to the saw headset, the reason for this malfunction may not always be related to the oil pump. Sometimes in the process of disassembling the saw, you will be able to find faults in other elements not related to this assembly. often than not, changing them solves the main problem.

over, before you start blaming the oil pump for all the problems, check the oil filter, which not only makes the oil pump worse, but can even cause it to break down completely if it gets extremely dirty. To check the oil filter, simply hold a piece of paper over it. The density of the last will allow you to assess the condition of the filter and develop a plan of further actions.

Important! Sometimes, after repairing the lubrication system, the consumable does not come to the saw headset, then you need to look for the cause of the failure of the mechanism in the regular adjustments. The problem can also be due to a mismatch between viscosity and density. On the other hand, the appearance of this problem through carelessness or inattention can provoke the operator by installing the wrong guide on the power unit, for example, on an ordinary household, the guide from a professional powerful tool.

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